- 问题详情:HousedinMilan,oneofEurope'sdirtiestcities,LeonardodaVinci'smasterpieceTheLastSupperstillfacesathreatfromairpollution,researcherssay,despitepreventativemeasuresthathavesignificantlydecreasedpollutantsinthechurchwherethefamouspaintingisondisp...
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